Water-cooled blowpipe.



A. W. WAERN. WATER COOLED BLOWPIPE. APPLICATION mm OCT-29. 1914.

Patented July 13, 1915.

A TTOH/VEY EU PAWEhI f ADOLPH 11V. VIAEBN, 0F NEWYOBK, N. Y., ASSIGNOROF ONE-HAL1E TO JOSEPH 'H.

WALLACE, 0F NEW YORK, N. Y.

WATER-(300L151) BLOWPIPE.

Application filed Gc-tober 29, 1914.

To all whom it may concern Be it known that I, ADoLrn W. VVAERN, acitizen of the United States of America, and a resident of New York,county and State of New York, have invented certain new and usefulimprovements in Water- Cooled Blowpipes, of which the following is aspecification, reference being had to the accompanying drawings, forminga part thereof.

My invention relates to improvements in water-cooled blow-pipes, and itsobject is to improve upon the construction and usefulness of blow-pipesfor smelting furnaces, such as are used for example, in the smeltingpots and furnaces of sulfate mills.

1 will describe my invention in the following specification andthenpoint out the novel features thereof in appended claims.

Referring to the drawings: Figure 1 is a sectional elevation of asulfate furnace with a blow-pipe embodying my invention shown therewith.Fig. 2 is an elevation mostly in central longitudinal section of ablow-pipe which is made in accordance with this invention. Fig. 3 is asectional elevation on an enlarged scale of one end of this apparatus.

Like characters of reference designate cor responding parts in all thefigures.

1O designates a smelting furnace of ordinary form, above which is afloor 11 and as is usual in an installation of this kind, a water-cooledblow-pipe projects into the furnace from above.

lin the drawing 12 designates a blow-pipe of novel construction.

In my improved blow-pipe which is shown in the drawings, 20 designatesan air pipe on one end of which is screwed a fitting 21 to which an airpipe from a suitable source of supply may be attached. The end of thisfitting is closed by a plug 22 which may be removed for the purpose ofcleaning out the air pipe, and which is provided with a ring 23 by meansof which the whole device may be raised or lowered.

The air pipe runs through a head 30 and a water-tight joint is formedtherewith by means of a stuHing-box 31. A water supply pipe 82 isconnected with this head and the water pipe 83 is in communication thereSpecification of Letters Patent.

Patented may 13%, 181115.

Serial No. 869,161.

with through a passage 34- formed in the head. The water pipe 33 runs toa point near the inner end of the apparatus where it is screwed into anannular shower member 35 which is provided with a plurality of spacedorifices 36 which are so positioned as to deliver the water in a numberof divergent streams. The head 30 is also constructed to form a passage37 which is open to the inside of the water jacket and with which thewater discharge pipe 38 is connected.

4:0 is an outer pipe to one end of which is aflixed a collar 4-1 whichis fastened to the head 30 by bolts 42. By this means the head 30 ispositioned and the outer ends of pipes 20 and 4L0 centered. At the otherends the pipes are connected by'a cap 43 which is threaded onto pipe 20at 4.4, and onto pipe 40 at 45.

A6 is an adjustable band by means of which the downward movement of theblowpipe into the furnace is limited and its position therebypredetermined.

The general operation of this device is like that of blow-pipes now inuse, in that air is introduced into the furnace through it and water isused to keep it from getting too hot. In former structures however, ithas been found necessary to weld together the inner ends of the air pipeand the outer pipe in order to obtain a water tight joint and screwconnections have not been made possible. Another trouble experiencedwith former blow-pipes has been caused by the fact that the water isdelivered at a single point thereby cooling one side of the head morethan the other, resulting in uneven expansion, and also allowing anaccumulation of dirt to form in the inner head opposite the point ofwater delivery which sooner or later results in overheating at one spotand consequent breakage.

According to my invention the water is delivered equally around thedischarge end of the pipe and is discharged in outwardly directedstreams against the part of the apparatus which is subjected to the mostintense heat, and the structure is kept washed out by the equal deliveryof water so that no accumulations of dirt are formed. By this simpleexpedient I am enabled to provide an inexpensive structure which iscapable of standlng up under the work required of 1t, and a constructionWlllCll may be readily repaired if need be, or taken apart to becleaned.

I intend no limitations other than those imposed by the appended claims.

What I claim is: l. A water-cooled blow-pipe comprising an inner airpipe, an outer pipe, a member .onto WlllCll an end of each of sald pipesis near the connected ends thereof, and a water pipe connected with saidsprinkler.

3. A water-cooled blow pipe, comprising an inner air pipe, an outerpipe, a hollow cap onto which an end of each of said pipes is threaded,an annular sprinkler between said pipes near said cap, said sprinkler being provided with a plurality of orifices arranged to deliver jets ofwater outwardly against the cap, and a water pipe connected with saidsprinkler.

In witness whereof, I have hereunto set my hand in the presence of twosubscribing witnesses, this 27 day of October, 1914.

ADOLPH W. VVAERN.

Vitnesses:

R. J. DEARBORN, F. GRAVES.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. C.

